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SCADA (Supervisory Control And Data Acquisition) is a system that refers to a combination of telemetry and data acquisition. This consists of gathering information, transferring it back to the control center, carrying out the necessary analysis and control, and then displaying this…
What are coal feeders? Coal Feeder is a device that regulates the amount of coal to be supplied into the Coal Mill. The amount of coal is regulated according to the needs in the boiler combustion chamber (furnace). The number regulation system…
Understanding Pressure Switch on separator Pressure switch Separator is a safety device that serves to prevent abnormal pressure from occurring in the Separator. Both excessive pressure (too high) and less pressure (too low) by closing the flow leading to Separator if Pressure…
Safety instrumented system (SIS) is a system designed to monitor dangerous conditions in a plant (operation unit) and take action in the event of a dangerous condition or a condition where if no action is taken it will cause danger. This system…
Mass flowmeters are devices that measure the amount fluid passed to a process. Mass flowmeters are used where the composition of materials used are important, which ensures the quality of the product. These are the different types of mass flowmeters: 1. Coriolis…
Modern DC and AC motors provide useful features when using electric motors as final control elements. Here are some common features that are seen in both VSDs and VFDs. Speed limiting Torque limiting Limitation of acceleration (speed of change) Limitation of deceleration…
Piping and Instrumentation Diagrams (P&ID) are schemes of pipelines, equipment, instrumentation, control systems, from a process system found in Oil Refinery, Chemical Plant, Paper Mill, Cement Plant, etc. The symbols contained in P & ID represent equipment such as actuators, sensors and…
What is pH? pH is a unit of measurement that describes the degree of acidity or alkali content of a solution. The pH unit is measured in terms of 0 to 14. The pH is formed from quantitative information expressed by the…
What is HMI? Human Machine Interface or commonly called Man Machine Interface is the interface software between the machine or plant and the operator or observer. HMI is designed to make process industries work easier and to monitor the status of a…
Valve tests are done to verify and to ensure that the valves are suitable for factory working conditions. There are different types of tests that are carried out in a valve. Not all the tests should be done in a valve. Types…
